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Re: Bug with transpose in functions

From: David Kastrup
Subject: Re: Bug with transpose in functions
Date: Fri, 12 Jul 2019 21:48:13 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux)

Werner LEMBERG <address@hidden> writes:

>> Functions like transpose act destructively on their argument, so you
>> need a copy or the original will get changed.  [...]
> How can Joe User find out whether a function is acting destructively?

All music functions are allowed to do that by definition because it
would be inefficient if every transformation would have to create a

David Kastrup

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